**4.5 Von Kármán vortex street behind a circular cylinder**

The von Kármán vortex street is one of the most extensively studied cases both experimentally and numerically in fluid dynamics. The initial condition is a uniformfree stream. The free-stream Mach number is taken as *M*<sup>∞</sup> ¼ 0*:*1 and the Reynolds number is taken as Re ¼ 100 based on the diameter of the cylinder. The grid is composed of 21, 809 prismatic elements, 22, 804 grid points, 43, 168 triangular boundary faces, and 199 quadratic boundary faces, as shown in **Figures 9** and **10**. The vorticity contours within the half cycle are shown in **Figure 11**.

**Figure 6.** *Triangular meshes of the symmetric plane for laminar flow past a delta wing.*

**Figure 7.** *Triangular meshes of delta wing surface.*

*Hyperbolic Navier-Stokes with Reconstructed Discontinuous Galerkin Method DOI: http://dx.doi.org/10.5772/intechopen.109605*

**Figure 8.** *Vorticity magnitude contours and stream traces for delta wing.*

**Figure 9.** *Meshes for von Kármán vortex street.*
